Hopeless

Hi, I dont know if I'm posting this in the correct section but I'll go ahead anyway. Same pattern as others on here went to visit 3 different doctors who told me I was constipated lol. Then went to a naturopath who gave me a detox plan which I reacted absolutely horribly to. Then visited a herbalist who said I'm severely parasitic and also had candida as well as leaky gut. I'm currently taking Wormwood , Black-Walnut , and marshmallow root teaspoon in the morning and before bed. Diet I've been given consists of wholemeal bread which I keep reading is a no no, Shredded wheat which I've also read is a no no,rice milk, fish and apples as the only fruit.
Currently severly Depressed anxious, hopeless and lacking any kind of motivation. Still constipated then suddenly having diarrhea occasionally.
Also occasional bouts of anger and rage at everything. Wishing I had a real disease that would actually kill me off. Spend all my day reading about this and feel as though I'm making zero progress. Any tips would be greatly appreciated as everyday feels like a nightmare atm. Speaking of which I've actually woken from horrible nightmares recently wishing they were real as my life is so bleak.